最近的科学研究中发现，人体自然产生的唾液中含有止痛物质，而且其功效是吗啡的六倍。自然的止痛物质是很少的，因此科学家希望通过这一发现，将来有望应用 到临床研究中。自然止痛...

Cholesterol drugs called statins could protect smokers from some of the lung damage inflicted by their habit, a team of researchers report today.
Their study of smokers and former smokers showed that patients who took statins were 35% less likel...